SSR 框架如何搭建

npx create-react-app my-ssr-app
cd my-ssr-app
npm install express react-dom/server

const express = require('express');
const React = require('react');
const ReactDOMServer = require('react-dom/server');
const App = require('./src/App').default;

const app = express();

app.get('*', (req, res) => {
  const appString = ReactDOMServer.renderToString(<App />);
  res.send(`
    <!DOCTYPE html>
    <html>
      <head>
        <title>My SSR App</title>
      </head>
      <body>
        <div id="root">${appString}</div>
        <script src="/bundle.js"></script>
      </body>
    </html>
  `);
});

app.listen(3000, () => {
  console.log('Server is listening on port 3000');
});

const path = require('path');
const nodeExternals = require('webpack-node-externals');

module.exports = {
  entry: './server.js',
  output: {
    path: path.resolve(__dirname, 'dist'),
    filename: 'server.bundle.js'
  },
  target: 'node',
  externals: [nodeExternals()],
  module: {
    rules: [
      {
        test: /\.js$/,
        exclude: /node_modules/,
        use: {
          loader: 'babel-loader'
        }
      }
    ]
  }
};

const path = require('path');

module.exports = {
  entry: './src/index.js',
  output: {
    path: path.resolve(__dirname, 'dist'),
    filename: 'bundle.js'
  },
  module: {
    rules: [
      {
        test: /\.js$/,
        exclude: /node_modules/,
        use: {
          loader: 'babel-loader'
        }
      }
    ]
  }
};

{
  "presets": ["@babel/preset-env", "@babel/preset-react"]
}

npx webpack --config webpack.client.config.js
npx webpack --config webpack.server.config.js
node dist/server.bundle.js